• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
twelve important naval substances – bonding
twelve important naval substances – bonding

organic lab questions
organic lab questions

... Write descriptive organic equations for all reactions. If no reaction occurred, write N.R. for the products of the reaction. Under each alcohol, write the common name of the alcohol. Under each carboxylic acid write the I.U.P.A.C. name of the carboxylic acid. Finally, write the name of the ester und ...
Reading Guide Organic Chemistry
Reading Guide Organic Chemistry

... Based on the boiling points of water and methanol, which would you expect to have a greater degree of hydrogen bonding? Explain your answer. ...
T. V. RajanBabu Chemistry, 730 Autumn 1997
T. V. RajanBabu Chemistry, 730 Autumn 1997

... Acidites of phosphonium and sulfonium compounds and ylides (for chemistry see later) Enols, enamines and metalloenamines in synthesis Mechanism of acid and base catalyzed enolization, kinetic vs thermodynamic control Detailed mechanism of -substitution of a carbonyl compound (e. g., bromination) Ca ...
730-2005 topics
730-2005 topics

... Acidites of phosphonium and sulfonium compounds and ylides (for chemistry see later) Enols, enamines and metalloenamines in synthesis Mechanism of acid and base catalyzed enolization, kinetic vs thermodynamic control Detailed mechanism of -substitution of a carbonyl compound (e. g., bromination) Ca ...
LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034  PART-A
LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034 PART-A

... stereochemistry of the major product. b) What is Alder’s endo rule? How does it control the stereochemistry of cycloaddition product? Explain with an example. 25. a) There are two rearrangements involved in the following reaction. Identify them and write the mechanism. OH ...
File
File

Exp 19 - Diphenylacetylene_2015
Exp 19 - Diphenylacetylene_2015

... Add approximately 180 mg of trans-stilbene (MW = 180 g/mol) and 2.0 mL of dichloromethane (DCM) to a 5 mL conical vial containing a spin vane. Place the vial on the stir-plate in the aluminum block and stir until the stilbene has dissolved. In a test-tube, obtain approximately 1.2 mL of the 5% Br2 i ...
Molybdenum based catalysts as Oxidants and Reductants
Molybdenum based catalysts as Oxidants and Reductants

... Reductions of functional groups of organic compounds Organic molecules having a number of unsaturated groups such alkenes, alkynes, ketones, aldehydes, nitro, sulfoxides and aromatic ring etc can be reduced catalytically under suitable conditions, although these groups are not all reduced with equa ...


... and they usually require high temperatures and/or long react ion times, and side reactions, such as isomerization, epimerization and rearrangements may be induced by the alkaline conditions. Furthermore, high temperatures are not only detrimental to certain functional groups, but also to the control ...
Senior Science topics Programme
Senior Science topics Programme

... exemplified by the hydrogenation of ethene. The process in which the reaction is speeded up by the presence of a catalyst is illustrated by 3-D animation. ...
Presentation - Chem Rxns - stpats-sch3u-sem1-2013
Presentation - Chem Rxns - stpats-sch3u-sem1-2013

... Coefficient = a whole number indicating the ratio of molecules of each substance involved in a chemical reaction ...
Macromolecule Wkst
Macromolecule Wkst

... Part E. Each of the following structures below shows a fatty acid molecule. On the line, identify the fatty acid as saturated, unsaturated, or polyunsaturated. ...
Elise Miner Education:
Elise Miner Education:

PowerPoint Presentation - Slide 1 - University of Evansville Faculty
PowerPoint Presentation - Slide 1 - University of Evansville Faculty

CH19 Aldehydes and Ketones
CH19 Aldehydes and Ketones

Quiz 3 – Aldehydes and Ketones 1 Which of the following reactions
Quiz 3 – Aldehydes and Ketones 1 Which of the following reactions

Chemistry Final Test
Chemistry Final Test

Organic Reactions
Organic Reactions

Topic 3 – Chemical Structure and Bonding
Topic 3 – Chemical Structure and Bonding

... Mechanism - electrophilic substitution Reagents - concentrated HNO3 and concentrated H2SO4 ...
Review Problems
Review Problems

MULTISTEP SYNTHESIS PROTECTING GROUPS
MULTISTEP SYNTHESIS PROTECTING GROUPS

Microsoft Word - Final Exam Study Guide
Microsoft Word - Final Exam Study Guide

Microsoft Word
Microsoft Word

Alkenes from Alcohols
Alkenes from Alcohols

< 1 ... 134 135 136 137 138 139 140 141 142 ... 148 >

Ring-closing metathesis



Ring-closing metathesis, or RCM, is a widely used variation of olefin metathesis in organic chemistry for the synthesis of various unsaturated rings via the intramolecular metathesis of two terminal alkenes, which forms the cycloalkene as the E- or Z- isomers and volatile ethylene.The most commonly synthesized ring sizes are between 5-7 atoms; however, reported syntheses include 45- up to 90- membered macroheterocycles. These reactions are metal-catalyzed and proceed through a metallacyclobutane intermediate. It was first published by Dider Villemin in 1980 describing the synthesis of an Exaltolide precursor, and later become popularized by Robert H. Grubbs and Richard R. Schrock, who shared the Nobel Prize in Chemistry, along with Yves Chauvin, in 2005 for their combined work in olefin metathesis. RCM is a favorite among organic chemists due to its synthetic utility in the formation of rings, which were previously difficult to access efficiently, and broad substrate scope. Since the only major by-product is ethylene, these reactions may also be considered atom economic, an increasingly important concern in the development of green chemistry.There are several reviews published on ring-closing metathesis.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report